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Finding the Third Proportional to 4,432 and 8,312

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Solution

The third proportional to 4,432 and 8,312 is: 15,588.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,432 : 8,312 = 8,312 : x
  2. Step 2: Convert to fraction form
    4,432/8,312 = 8,312/x
  3. Step 3: Cross multiply
    4,432x = 8,312 × 8,312
  4. Step 4: Simplify right side
    4,432x = 69,089,344
  5. Step 5: Solve for x
    x = 69,089,344/4,432
  6. Step 6: Final answer
    x = 15,588.75

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Why These Related Problems?

These problems maintain the same ratio (1.88) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.